P2 electricity in the home

Question 1

What is the unit of electric current?

Answer 1

Ampere (A)

Question 2

True or False: Voltage is the measure of the energy per unit charge.

Answer 2

True

Question 3

Fill in the blank: The formula for calculating electrical power is ____ = Voltage x Current.

Answer 3

Power

Question 4

What is the purpose of a fuse in an electrical circuit?

Answer 4

To protect the circuit from excess current.

Question 5

Which of the following is a conductor? a) Wood b) Copper c) Rubber

Answer 5

b) Copper

Question 6

What does the term ‘earth wire’ refer to in an electrical system?

Answer 6

A safety wire that prevents electric shock by directing current to the ground.

Question 7

What happens to the resistance of a circuit if the length of the wire is increased?

Answer 7

The resistance increases.

Question 8

True or False: Alternating current (AC) flows in one direction only.

Answer 8

False

Question 9

What is the main advantage of using circuit breakers instead of fuses?

Answer 9

Circuit breakers can be reset, while fuses need to be replaced.

Question 10

Define ‘short circuit’.

Answer 10

A low-resistance connection between two conductors that allows excessive current to flow.